620661198 has 16 divisors (see below), whose sum is σ = 1271599056. Its totient is φ = 201840960.

The previous prime is 620661113. The next prime is 620661227. The reversal of 620661198 is 891166026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261261 + ... + 1261752.

It is an arithmetic number, because the mean of its divisors is an integer number (79474941).

Almost surely, 2^620661198 is an apocalyptic number.

620661198 is an abundant number, since it is smaller than the sum of its proper divisors (650937858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620661198 is a wasteful number, since it uses less digits than its factorization.

620661198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523059.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 620661198 is about 24913.0728333540. The cubic root of 620661198 is about 853.0049114924.

The spelling of 620661198 in words is "six hundred twenty million, six hundred sixty-one thousand, one hundred ninety-eight".